South West Africa campaign south, faced with certain destruction, surrendered. When the Germans provided lists of the names of approximately 2,200 troops under their command, Botha told the German delegation that he had been tricked, as he knew that the Germans had 15,000 men. Victor Franke, the German commander, replied, "If we had 15,000 men then you wouldn't be here and we wouldn't be in this position." Before an official declaration of war between Germany and Portugal (March 1916), German and Portuguese troops clashed several times on the border between German South West Africa and Portuguese Angola. The Germans won most of these clashes
South West Africa land taken from the northern border of Bechuanaland, extending as far as the Zambezi river, was added to the colony. It was named the Caprivi Strip ("Caprivizipfel") after the German Chancellor Leo von Caprivi. In 1915, during South West Africa Campaign of World War I, South Africa captured the German colony. After the war, it was declared a League of Nations Class C Mandate territory under the Treaty of Versailles, with the Union of South Africa responsible for the administration of South West Africa. From 1922, this included Walvis Bay, which, under the South West Africa Affairs Act, was governed