Английский словарь американских идиом - steal a march on

{v. phr.} To get ahead of someone by doing a thing unnoticed; get an advantage over. * /The army stole a march on the enemy by marching at night and attacking them in the morning./ * /Jack got the job by getting up earlier than Bill. He stole a march on him./ Compare: GET THE JUMP ON, GET THE BETTER OF, TAKE BY SURPRISE.