Sat down Armour stand

/summon armor_stand ~ ~ ~ {NoBasePlate:1b,ShowArms:1b,ArmorItems:[{id:"iron_boots",Count:1b},{id:"iron_leggings",Count:1b},{id:"iron_chestplate",Count:1b},{id:"iron_helmet",Count:1b}],HandItems:[{id:"diamond_sword",Count:1b},{id:"shield",Count:1b}],Pose:{LeftLeg:[262f,0f,0f],RightLeg:[262f,0f,0f],LeftArm:[291f,0f,0f],RightArm:[255f,0f,0f]}}