 Hodalj praised the Sisak OG command for managing to keep the operation a secret until it was launched, making sure it would surprise the JNA. The secrecy was reflected in the apparent last-minute rerouting of the 102nd Infantry Brigade to the offensive, although the Zagreb Operational Zone deployed it to Sunja, to the east of Sisak. Still, the Sisak OG failed to prepare detailed river crossing plans, or even issue maps and written brigade-level commands for the crossings — relying on oral commands instead. Likewise, the troops were not equipped to endure the cold weather in the open, limiting their effectiveness. Hodalj concluded that the offensive exceeded needs and capabilities of the Sisak OG. Even though the 1991 HV investigation concluded that the offensive was prepared for ten days and was approved by Zagreb Operational Zone command, there are no documents pertaining to the preparations other than those issued by the Sisak OG itself. Regardless of the poor preparation of the offensive, the 102nd Infantry Brigade was subject to public criticism in Croatia for fleeing the battlefield in the aftermath of Operation Whirlwind.
