The solitaire army is a one-person peg jumping game where a player attempts to advance an “army” of pegs as far as possible into empty territory. The game was introduced by John Conway and is also known as “Conway’s Soldiers.” We consider various generalizations of this game in different 2D geometries, unify them under a common mathematical framework, and find the minimum size army capable of a...

National defense and security education is a specific subject in universities professional schools; the very important order to raise awareness responsibility for young generation task of defending Fatherland. The basic national has provided students with an understanding all-people defense, glorious tradition Vietnamese army people; acquiring essential skills military command, nature, structur...