Please add punctuation to this: After basic training during the summer of 1917 he arrived at the Proving Ground on 4 January 1918 Veblen headed the Division of Experimental Ballistics which was the mathematical research facility at the Proving Ground
After basic training during the summer of 1917, he arrived at the Proving Ground on 4 January 1918. Veblen headed the Division of Experimental Ballistics which was the mathematical research facility at the Proving Ground.