The Defense Ministry on Thursday reprimanded two people involved in encouraging Air Self-Defense Force personnel to enter a controversial essay contest won by sacked ASDF Chief of Staff Gen. Toshio Tamogami and unveiled measures to prevent similar controversies.

The ministry said a 54-year-old lieutenant general and a 51-year-old colonel have received warnings for failing to consider the consequences of encouraging servicemen to enter the contest but refused to name the officers.

A total of 97 ASDF members entered the contest after reportedly being told it would help their career prospects.