One of the suburbs of Gwalior is Known as Lashkar (Currently the Old city), It was a place for the royal armies in the old time to set up their temporary base for the war, The Train was named as Lashkar Express, as it was a train which originated from Gwalior to Mumbai, Later it was extended to Agra. If i remember correctly there was lot of public pressure to name it as Rani Laxmi Bai Express also, Incidentally Rani Laxmi Bai died at Gwalior Fighting the British Army for the Battle of Independence 1857