Although you may want to turn off your sound when viewing this video, this video contains many shots of the weapons system in action in the Leopard 2A4. This video consists of armored vehicles in the Finnish armed forces. I personally know the video creator who was a tank commander. He has shared many stories with me to say the least.
For example he has told me about his detailed adventures in simulation warfare and how has adapted tanks to modern day tactics by being in the field and experiencing everything upfront. You can see these things taking place in this video.
I will warn again however that the music is loud.