The Bir Sreshtho (The Most Valiant Hero), is the highest military award of Bangladesh. It was awarded to seven freedom fighters who showed utmost bravery and died in action for their nation. They are considered martyrs.
The other three gallantry awards are named, in decreasing order of importance, Bir Uttom, Bir Bikram and Bir Protik. All of these awards were introduced immediately after the Liberation War in 1971.