At the end of his two years in Nigeria in 1929, Lindsay undertook his first expedition, travelling from West to East Africa through the
Ituri Rainforest in what was then called the
Belgian Congo. In 1930 he was appointed Surveyor to the
British Arctic Air Route Expedition to Greenland, led by
Gino Watkins. Expedition members included
John Rymill and
Freddie Spencer Chapman but, as a seasoned Army officer, Lindsay brought a disciplined organisational and administrative experience to the team. Lindsay later wrote up his experiences in a book
Those Greenland Days (1932), paying tribute to Watkins' team building. The success of this expedition resulted in Lindsay and the other key expedition members being awarded the
Polar Medal, with the clasp
Arctic 1930–1931. Lindsay enjoyed writing about explorers and, in 1933, followed up his success with
The Epic of Captain Scott, his tribute to
the famous explorer.
British Trans-Greenland Expedition In 1934 Lindsay was the Leader of the British Trans-Greenland Expedition under the patronage of
the Prince of Wales. The expedition was sponsored by several British government ministries and aimed to explore and map a 350-mile long stretch of
Greenland which had not previously been visited but contained the highest mountains in the Arctic Circle.
Andrew Croft was the photographer for the expedition; Lt. Daniel Godfrey was in charge of survey and navigation. The expedition crossed Greenland from west to east, and succeeded in fixing the positions of many important features including
Gunnbjørnsfjeld. On the return journey the team headed south-west to Amassalik (now
Tasiilaq) and on their journey discovered the extent of the
Crown Prince Frederick Range (Kronprins Frederik Bjerge). Lindsay's expedition set a new world record after sledging for 1,050 miles (700 of which were through unexplored territory). When all three returned safe and well, the expedition was regarded as an unqualified success, with
The Times devoting a
leader to it.
The Times observed that "for daring and success [it] will rank high in the long annals of polar exploration". Lindsay had also written his report of the expedition for
The Times and in 1935 wrote a book,
Sledge, based on these reports. His fame extended beyond Britain and in April 1935 he was awarded the Alexandre de la Roquette Gold Medal by the French Geographical Society for his leadership. ==Civilian interlude==