Stephen justified this by saying that "every man has a duty to defend his fatherland"; according to Polish chronicler Jan Długosz, if someone was found without carrying a weapon, he was sentenced to death.
In the Middle Ages and early Renaissance, the Moldavians relied on light cavalry (călărași) which used hit-and-run tactics similar to those of the Tatars; this gave them great mobility and also flexibility, in case they found it more suitable to dismount their horses and fight in hand-to-hand combat, as it happened in 1422, when 400 horse archers were sent to aid Jagiellon Poland, Moldavia’s overlord against the Teutonic Knights.
In times of war, boyars were compelled by the feudal system of allegiance to supply the prince with troops in accordance with the extent of their manorial domain.
The Moldavians' (as well as Wallachians') favourite military doctrine in (defensive) wars was a scorched earth policy combined with harassment of the advancing enemy using hit-and-run tactics and disruption of communication and supply lines, followed by a large scale ambush: a weakened enemy would be lured in a place where it would find itself in a position hard or impossible to defend.
With the economic demands created by the stagnation of the Ottoman Empire, the force diminished and included only mercenaries such as the seimeni.
Their renewed existence under Mihail Sturdza was a major symbol and rally point for the nationalist cause, aiding in bringing about the 1848 Moldavian revolution.
[3] Another mention of the Moldavian fleet is found in connection with the rule of Aron Tiranul, who used it to help Wallachian ruler Michael the Brave establish his control over the Chilia branch of the Danube and Dobruja.