After 1600, civil war became far more common than inter-state warfare. The government instituted a draft for the entire population during wartime, but only a limited number actually served. Many who did not carry arms instead carried baggage and supplies. Thousands of women supported armies on the move. Administrators expected soldiers to have two weeks' worth of food upon reporting for campaign duty. Logistical difficulties probably limited both the size of armies and their capacity to operate for extended periods. Some Portuguese sources suggested that the king of Kongo fielded armies as large as 70,000 soldiers for a 1665 Battle of Mbwila, but it is unlikely that armies larger than 20–30,000 troops could be raised for military campaigns.