The 2 blue knights/soldiers are cool   

 , I want those (darn, I'm getting deeper into the Medieval theme  

 ).
Cannons can go along with knights in Late Medieval History; starting in the 14th century. But it should be early "primitive" designs, and not these specific gunbarrels which look rather 17th-18th century. To put them swivelling on the baseplate's rock or fence looks totally ridiculous...