A month after his graduation from the academy, the Dutch began a military offensive codenamed Operation Kraai. As a second lieutenant, Soedjiman was put as the commander of a military under-district in the Yogyakarta Military Sub-Territorial Command. After the operation ended and a peace treaty was signed between the Dutch and Indonesians, Soedjiman was posted to South Sumatra, and was put in command of a platoon in the Red Garuda Battalion. Later, Soedjiman became a quartermaster in South Sumatra.
