British Army during the Napoleonic Wars led to the Battle of Trafalgar, a French fleet carrying 6,500 troops briefly captured Dominica and other islands but subsequently withdrew. In 1808, once the British were allied to Portugal and Spain, they were able to concentrate their forces and capture the French possessions one by one; Cayenne and Martinique in 1809, and Guadeloupe in 1810. Haiti was left to the insurgent armies. In 1805 news arrived in London that Napoleon had broken up his invasion camp at Boulogne, and was marching across Germany. The Prime Minister of the United Kingdom William Pitt immediately equipped an army of 15,000 men,
Battle of Buna–Gona: Allied forces and order of battle a way that neither artillery nor air power had been able to achieve. Where tanks were able to be employed, greater gains were made with fewer losses. However, the effective use of tanks was constrained by terrain. The efficacy of naval bombardment against shore targets and in support of amphibious or land operations in coastal areas is well documented. Allied ships in the south-west Pacific were heavily committed to supporting the Guadalcanal Campaign, which was strongly opposed by the Imperial Japanese Navy for its duration. The Naval Battle of Guadalcanal was fought between 12–15 November. Heavy losses were incurred by