© Slovak Post, 2007 The field post appeared in the history of post and postal services at the origin of message transport. In the middle ages, couriers using postal lines delivered military messages. Archive evidence, however, testifies that alternative postal lines were necessary during wars. The first military postal line was established in 1496 during the Italian war of Maximilian I. Later, provisional military postal lines were called the “field post”. Censor cancellation document the fact that the field post was censured. Soldiers in World War One and World War Two only used field postal cards. “Captive post” is a special...