So it seems you're new to the hobby
Okay, what's going on here? A lot of very friendly and talented people (like the others) present their painted miniatures, vehicles and scenery to each other and other not so talented attenders (me
), looking for discussions, advice and inspiration for modeling, painting or stories. These may be home made as well as bought. Nearly all of the miniatures shown here are meant for tabletop wargaming or collection pieces, and are used for that. These wargames might be written down as battle reports, telling the stories you mentioned. This reaches from all historical periods to any kind of fictional worlds.
I hope this short briefing gives you a general overview of the landscape. If there are any questions left, send a Butlerbot to the command center. The Inner Circle will despatch an orderly to take you where you desire