sentences:  The occupation of the Transvaal and the Orange Free State in 1900 did not subdue the Boers, who waged a guerrilla campaign throughout 1901 until the end of the war in May 1902.Chamberlain was caught between Unionists demanding a more effective military policy and many Liberals denouncing the war.Publicly, Chamberlain insisted upon the separation of civil and military authority, insisting that the conduct of the war be left to the generals.