Middle East and Greece With the outbreak of
World War II, Green volunteered for overseas service and on 13 October 1939, he enlisted in the
Second Australian Imperial Force (2nd AIF) which was being raised for that purpose. He was posted to the
2/2nd Battalion, which was one of the first units raised upon the outbreak of the war and formed part of the
16th Brigade that was assigned to the
6th Division. The 2/2nd Battalion was deployed to the
Middle East in February 1940. Green initially served as one of the 2/2nd's platoon commanders, but accidentally injured himself, and missed out on taking part in 6th Division's first combat action, which took place during the
North African campaign between December 1940 and January 1941. On 12 March he was promoted to
captain, and on the 22nd the battalion arrived in Greece to repel the anticipated
German invasion. The battalion was deployed north into the
Macedonia region to face the German assault, which began on 6 April. It took up positions at
Veria on 7 April, but the
Allied armies withdrew, so the battalion did not fight until mid-April. Green and the rest of the 2/2nd Battalion saw
action at Pineios Gorge on 18 April. The British and Commonwealth forces attempted to block the German advance at the Gorge. They were quickly overwhelmed by the larger German forces, the 2/2nd Battalion losing 44 killed or wounded and 55 taken
prisoner in desperate fighting. This resulted in the members of the battalion being dispersed into the surrounding hills. While elements of the battalion were able to rejoin the main forces withdrawing south to embark on ships, others were forced to make their escape independently. Green and many other members of the battalion evaded capture by undertaking a hazardous journey through the
Aegean Islands, then
Turkey, to
Palestine, which Green reached on 23 May. Green reached the island of
Euboea in the Aegean on 7 May, where he met several other members of the battalion. They travelled on to the island of
Skyros, and after narrow escapes from detection by German troops and aircraft, reached
Smyrna (modern
İzmir) on the Turkish coast, where they obtained the assistance of two Turkish officers who had fought the Australians at
Gallipoli in
World War I. Disguised as "English civil engineers" they caught a train to
Alexandretta (modern İskenderun), from where they boarded a Norwegian ship to
Port Said, Egypt. Green learned a great deal from his experiences in Greece. According to Margaret Barter, the author of his entry in the
Australian Dictionary of Biography, he contributed a "sensitive account" of the campaign to a battalion history,
Nulli Secundus Log, which was published in 1946. During his time in Greece, Green developed a reputation as a calm and reassuring leader who communicated clearly with the soldiers under his command, a fellow officer observing that "[t]roops would follow Charlie anywhere because he understood them and they understood he was
fair dinkum [meaning: authentic]". After being rebuilt in Palestine, the 2/2nd Battalion was sent to undertake garrison duties in northern
Syria between October 1941 and January 1942. On 11 March it left the Middle East to return to Australia to meet the threat posed by the
Japanese. On the way home, the 16th Brigade was diverted to defend
Ceylon (modern Sri Lanka), where the 2/2nd Battalion was part of the garrison between 27 March and 13 July. Green was temporarily promoted to
major on 19 June.
Australia The battalion finally disembarked at Melbourne on 4 August. Having injured his foot and contracted
typhoid while in Ceylon, when the 2/2nd was sent to
New Guinea in September, Green was unable to join them. On 30 December, having been substantively promoted to major in September, he was posted as an instructor to the
First Australian Army's Junior Tactical School in
Southport, Queensland. He married Edna Olwyn Warner at St Paul's Anglican Church,
Ulmarra, New South Wales, on 30 January 1943; his best man was his former commanding officer,
Colonel Frederick Chilton. Green's posting to the First Army Junior Tactical School ended on 31 March 1943. On 26 June he took up an instructional position at the Junior Wing of the
Land Headquarters Tactical School at
Beenleigh, Queensland. Green returned to regimental duties in July 1943 and was made
second-in-command of the 2/2nd Battalion, which had returned from New Guinea after fighting in the
Kokoda Trail campaign and the subsequent
Battle of Buna–Gona, and was training in north
Queensland. Although Green was considered the natural successor to the previous commanding officer, now-
Brigadier Cedric Edgar, his posting as second-in-command alleviated the tensions created by the appointment of an "outsider"—Lieutenant Colonel
Allan Cameron—to command the battalion. Green undertook the senior officers' course at the Land Headquarters Tactical School between 18 August and 1 November 1944. During this course he was described as an "outstanding student". Chilton later observed, "Although quite young at the time he was very mature; a quiet, calm man, obviously with exceptional reserves of and force of character".
Aitape-Wewak campaign On 30 December 1944, Green arrived in the town of
Aitape, on the north coast of New Guinea, where the 6th Division was taking over responsibility for the area from US forces. On 9 March 1945, Green took over command of the
2/11th Battalion, part of Brigadier
James Martin's
19th Brigade of the 6th Division. At the age of only 25 he was the youngest Australian battalion commander during the war. Green was promoted to temporary
lieutenant colonel five days later. The battalion had landed at Aitape on 13 November 1944 to take part in the
Aitape-Wewak campaign against the Japanese
18th Army. For the 2/11th Battalion, the campaign consisted mainly of arduous patrolling operations. Before Green took command, the unit had been part of the push by the 19th Brigade along the coast east of the Danmap River from 17 December to 20 January 1945. During this advance, the battalion lost 20 killed and 29 wounded, and killed 118 Japanese. In early April, after Green had taken charge, the 19th Brigade was committed to an offensive against
Wewak, and concentrated at the base at the village of But. As part of this offensive, the 2/11th and the
2/7th Commando Squadron were sent on a wide sweeping movement inland to cut off the Japanese, who were abandoning Wewak in the face of pressure from the
2/4th Battalion and withdrawing their main force into the
Prince Alexander Mountains. After an arduous cross-country march across a swamp, the battalion arrived near Wirui Mission on 10 May and killed three Japanese who stumbled into their perimeter. This was followed by a series of clashes, culminating in the capture of a hill on 15 May by a company that lost four killed and 18 wounded, while killing 16 Japanese and capturing four machine guns. This was considered the hardest fighting the battalion had been involved in since arriving in New Guinea. This fighting in the foothills continued until the 27th when Green ordered a two-company attack to clear a pocket of Japanese. Supported by a 2,360-round artillery bombardment, the two companies killed 15 Japanese for the loss of two killed and six wounded. In total, during the May offensive, the 2/11th lost 23 killed and 63 wounded, and by the end of the month it was only 552 strong from a strength of 627 at the beginning of May, and only fielded 223 riflemen instead of 397. Soldiers from Headquarters Company were redistributed to the rifle companies to bring them closer to establishment strength. At the end of May, the 19th Brigade received orders to capture Mount Tazaki and Mount Shiburangu in the Prince Alexander Mountains. Initially, the 2/11th was placed in reserve, as it was depleted and its soldiers were weary. On 10 June, the battalion was given the task of protecting the area from Boram airfield to Cape Moem, and on the 19th the battalion contributed one company for an attack on Mount Tazaki. After an airstrike and artillery bombardment, B Company of the 2/11th secured its objective which had been abandoned by the Japanese. In early July, the
8th Brigade relieved elements of the 19th Brigade, including the 2/11th. During the Aitape-Wewak campaign, the 2/11th suffered 144 casualties. As a result of his efforts while commanding the 2/11th, Green was later appointed a
Companion of the Distinguished Service Order (DSO). The citation highlighted: the challenging terrain and conditions throughout the campaign; the interdiction of the battalion's supply lines by the Japanese early in the campaign; the particularly stiff and determined enemy resistance and considerable casualties; Green's deft handling of his logistics; his outstanding leadership which helped him maintain morale and efficiency within the battalion; and the fact that all objectives assigned to the unit during the campaign were achieved. After the
Japanese surrendered on 15 August, members of the battalion began to be sent home in groups to Australia for demobilisation. The last members of the unit left Wewak on 10 November. ==Post World War II==