Step 1
Find the Sentry Template
Pillager Outpost top-floor chests are the main source for the Sentry smithing template. The listed drop chance is 25%, so the practical search time depends on how quickly you can reach the structure and check its loot source.
Step 2
Duplicate the Template
Duplicate the template at a crafting table with 7 diamonds, 1 Cobblestone, and the original Sentry smithing template. The recipe returns 2 templates, which is the normal way to build a full armor set after finding one copy.
Step 3
Choose Materials for Sentry
Iron keeps Sentry practical, emerald matches raider-themed green accents, and diamond makes it brighter.
Step 4
Java /give Example
This command gives a netherite chestplate with Sentry trim using Iron as the trim material.
/give @p minecraft:netherite_chestplate[minecraft:trim={pattern:"minecraft:sentry",material:"minecraft:iron"}] 1Bedrock Edition
On Bedrock, create the trim at a smithing table. Give yourself the armor piece first, then combine the armor, the Sentry smithing template, and a Iron trim material in the smithing table UI.
/give @s netherite_chestplate
Bedrock commands cannot fully encode every trimmed armor combination the same way modern Java item components can, so the smithing table step is the reliable method.
