Duncan was appointed Governor-General in 1937, the first South African citizen appointee to hold the post. King
George VI, whom he represented as head of state, knighted him and appointed him to the
Imperial Privy Council of the United Kingdom. Although widely respected and above party politics, he made himself controversial in 1939 by refusing to call a general election on the question of whether or not the Union should enter
World War II. The
prime minister,
J.B.M. Hertzog, a former Boer general, wanted to stay neutral, but Parliament, including most members of his own party, supported his deputy,
Jan Smuts. Like Hertzog,
Smuts had also famously commanded Boer forces, but nonetheless favored entering the war on the side of the Allies. Sir Patrick's refusal to call a new election rendered Hertzog a
lame duck; after losing a vote of no-confidence he resigned from office. Sir Patrick swiftly commissioned Smuts to form a new government. With Smuts as Prime Minister, South Africa entered the war as a loyal ally of Great Britain. South Africa's entry into World War II triggered both short and long term political re-alignments that eventually led to Smuts being forced out of politics after the war and South Africa withdrawing from the British Commonwealth on 31 May 1961. However, Sir Patrick would never witness these events transpire, dying in office in 1943. His ashes were interred in a monument at the new Duncan Dock in
Cape Town harbour, which was named after him. The informal township of
Duncan Village in
East London, and the suburb of
Duncanville near
Vereeniging, were also named after him. ==Family==