Henry Young, Camerons and ASC?

[jkhats@hotmail.com]

According to the medal card, Henry Young private was in the Cameron Highlanders and the ASC, (in section which says which medals he is entitled to it uses RASC)with 2 regimental numbers Camerons=26132, ASC= M/428541. I would like to find out where he enlisted and where he was in the war, but not sure what the 2 regiments/2 numbers imply. Be grateful for some help!