"Today, hundreds of commanders – graduates of the [Ivan Bohun Military] Lyceum, armed with a deep knowledge of the latest approaches to the conduct of armed struggle, demonstrate a high level of professionalism, training and skill," he said at the ceremony of taking oath by students of Ivan Bohun Military Lyceum on Kyiv's St. Sophia's Square, according to an UNIAN correspondent.

Read alsoUkraine celebrating Defender Day (Video)"When I look into the eyes of our soldiers – at the front, at the parade, at the training ground, at the Invictus Games, I feel how we are getting stronger every day. These people have made Ukraine invincible and proud," the president said on the Day of Defender of Ukraine.

According to Poroshenko, the experience and fighting spirit of these people cause gratitude of compatriots, admiration of allies and fear of enemies.