claim: Baloch people are part of a writers' union.
evidence: The 257th Tunnelling Company was one of the tunnelling companies of the Royal Engineers created by the British Army during World War I .. World War I. World War I. British Army. British Army. tunnelling companies. Tunnelling companies of the Royal Engineers. Royal Engineers. Royal Engineers. The tunnelling units were occupied in offensive and defensive mining involving the placing and maintaining of mines under enemy lines , as well as other underground work such as the construction of deep dugouts for troop accommodation , the digging of subways , saps -LRB- a narrow trench dug to approach enemy trenches -RRB- , cable trenches and underground chambers for signals and medical services .. mines. Mining ( military ). deep dugouts. Dugout ( shelter )#World War I