 Complete the following phrase:  In 1915 a battalion of the 3rd Regiment of Tonkinese Rifles 3rd R.T.T. was sent to China to garrison the French Concession in Shanghai. The tirailleurs remaining in Indochina saw service in 1917 in putting down a mutiny of the Garde Indignene native gendarmerie in Thai Nguyen. In August 1918 three companies of tirailleurs tonkinois formed part of a battalion of French Colonial Infantry 