The first week is more about scouting and gathering resources; there isn't a serious army yet, so it's not really possible to engage in major battles. Although, it's often possible to capture 1-2 villages.
Overall, it's good to play with Stronghold and Swamp on these types of maps, preferably with a special ability focused on the tent; it's more difficult to play with Conflux. These factions have a decent respawn point that can be cleared. It's risky to play with Castle, Necropolis, and Tower in the early days; you can't do without a good mage.