what is the daily life as a soldier and how does it differ depending on the role you chose

Daily life wherever you are in the Army evolves around fitness, training and flexibility. The difference is that something like a combat role, you are constantly training and refreshing skills and improving for the time when you are required to do it for real, where as for a example a trade like REME, you will be actively working the trade, whether that be vehicle maintenance or weapons maintenance etc. Both have in common progressive training and development throughout a career, time to participate in sports and generally follow a normal working week when not on exercises or deployed.