The maximum size of the army ultimately depended on that of the overall population from which to draw levies. During the Ava period (1364–1555), when the country was divided into several small fiefdoms, each petty state could probably have mobilized 10,000 men at most. (The Burmese chronicles routinely report numbers at least an order of magnitude higher but these numbers have been dismissed by historians.) The latter kingdoms (Toungoo and Konbaung dynasties) with larger populations certainly fielded larger armies. The crown practiced the policy of having conquered lands provide levies to his next war effort. Historian GE Harvey estimates that Bayinnaung likely raised about 70,000 men for his 1568–1569 invasion of Siam while early Konbaung kings likely raised armies of 40,000 to 60,000.