was it bombed during war?
Yes, on 22 December 1940
Old Trafford
 Football continued to be played at the stadium, but a German bombing raid on Trafford Park on 22 December 1940 damaged the stadium to the extent that a Christmas day fixture against Stockport County had to be switched to Stockport's ground. 
when did man utd move to old trafford UNANSWERABLE where is this place? Old Trafford, Greater Manchester, England what is it known for? Football stadium when did it convert to full seater? Between July 2005 and May 2006
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Old Trafford [SEP] Wartime bombing
The club was now £15,000 in debt, not helped by the rental of Maine Road, and the Labour MP for Stoke, Ellis Smith, petitioned the Government to increase the club's compensation package, but it was in vain. Though Old Trafford was reopened, albeit without cover, in 1949, it meant that a league game had not been played at the stadium for nearly 10 years. United's first game back at Old Trafford was played on 24 August 1949, as 41,748 spectators witnessed a 3–0 victory over Bolton Wanderers.