Normally if one was conscripted.... you got sent where ever they wanted.... Typically didn't have a choice of where your going..... But if one happened to have prior military experience in a particular branch it sometimes was considered...
This is also a main reason that folks that were of military age and knew they would likely get snagged up soon enough in the conscription acts... They would go ahead and volunteer instead... hence in that case you at least had some degree of choice opportunities... Most would join up with a unit that was mustered up from their given area to be with other friends and/or relatives they knew...
Service in Home guards, Local Defense Troops etc,... normally didn't exempt one from being conscripted into the regular forces. This is also why later in the war these forces were typically made up entirely folks of ages under, or over the conscription age range