Newton undertook the first of his fifty-two operational
sorties on 1 January 1943, under the leadership of his commanding officer, Squadron Leader
Keith Hampshire. During February, Newton flew low-level missions through
monsoon conditions and hazardous mountain terrain, attacking Japanese forces ranged against Allied troops in the
Morobe province. In early March, he took part in the
Battle of the Bismarck Sea, one of the key engagements in the
South West Pacific theatre, bombing and strafing
Lae airfield to prevent its force of enemy fighters taking off to intercept Allied aircraft attacking the Japanese fleet. Newton gained a reputation for driving straight at his targets without evasive manoeuvre, and always leaving them in flames; this earned him the nickname "The Firebug".
Attacks on Salamaua On 16 March 1943, Newton led a sortie on the
Salamaua Isthmus in which his Boston was hit repeatedly by Japanese anti-aircraft fire, suffering damage to its fuselage, wings, fuel tanks, and undercarriage. He continued his attack and dropped his bombs at low level on buildings, ammunition dumps and fuel stores, returning for a second pass at the target to strafe it with machine-gun fire. Two days later, he and his two-man crew made a further attack on Salamaua with five other Bostons. As he bombed his designated target, Newton's plane was seen to burst into flames, having been raked by cannon fire from the ground. Attempting to keep his aircraft aloft as long as possible to get his crew away from enemy lines, he was able to
ditch in the sea approximately offshore. The two airmen were taken to Salamaua and interrogated until 20 March, before being moved to Lae, where Lyon was
bayoneted to death on the orders of
Rear Admiral Ruitaro Fujita, the senior Japanese commander in the area. Newton was taken back to Salamaua where, on 29 March 1943, he was ceremonially beheaded with a
samurai sword by
Sub-Lieutenant Uichi Komai, the naval officer who had captured him. General Headquarters South West Pacific Area released details of the execution on 5 October, but initially refused to name Newton due to the lack of absolute certainty as to identification. Air Vice Marshal
Bill Bostock, Air Officer Commanding
RAAF Command, contended that naming him would change the impact of the news upon Newton's fellow No. 22 Squadron members "from the impersonal to the closely personal" and hence "seriously affect morale". News of
the atrocity provoked shock in Australia. In an attempt to alleviate anxiety among the families of other missing airmen, the Federal government announced on 12 October that the relatives of the slain man had been informed of his death.
Victoria Cross Newton was awarded the
Victoria Cross for his actions on 16–18 March, becoming the only Australian airman to earn the decoration in the South West Pacific theatre of World War II, and the only one while flying with an RAAF squadron. The citation, which incorrectly implied that he was shot down on 17 March rather than the following day, and as having failed to escape from his sinking aircraft, was promulgated in
The London Gazette on 19 October 1943: ==Legacy==