The pack will work if:

• Install Optifine on your Minecraft
• Set: Options / Video Settings / Quality / Custom items: ON
• If you have Minecraft Forge the additional weapons may not work

This guide is updated for the latest version of the pack (v7) and will work for Minecraft (1.20.1) (1.19.4) (1.18.1)

WEAPONS

Copy the following commands and paste in-game chat to get weapons

UNIFORMS

MELEE

Use the anvil to rename any "Sword or Axe" by:

GRENADES

BLOCKS

ITEMS

AIRCRAFT

COMMANDS New! 

Gamerules:

Grenades don't destroy blocks

/gamerule mobGriefing false

Keep inventory

/gamerule keepInventory true

Unable mob drops

/gamerule doMobLoot false

Command blocks:
Repeating Command Block Always Active!

No bullet drop
execute as @e[type=minecraft:arrow] run data merge entity @s {NoGravity:1}

Remove stucked bullets

kill @e[type=minecraft:arrow,nbt={inGround:1b}]

Explosive Bottle o' Enchanting
execute at @e[type=minecraft:experience_orb] run summon minecraft:creeper ~ ~ ~ {Fuse:0,ExplosionRadius:3}

Mg08 full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Mg08"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Mg08"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Lewis Gun full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Lewis Gun"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Lewis Gun"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Mp18 full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Mp18"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Mp18"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Chauchat full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Chauchat"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Chauchat"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Bar M1918 full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Bar M1918"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Bar M1918"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Sopwith machinegun full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Sopwith machinegun"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Sopwith machinegun"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Albatros machinegun full auto

execute as @a[nbt={SelectedItem:{id:"minecraft:crossbow",tag:{display:{Name:'{"text":"Albatros machinegun"}'}}}}] run item replace entity @s weapon.mainhand with minecraft:crossbow{display:{Name:'{"text":"Albatros machinegun"}'},Charged:1b,ChargedProjectiles:[{id:"minecraft:arrow",Count:1b}]}

Flamethrower

execute if entity @a[nbt={SelectedItem:{id:"minecraft:bow",tag:{display:{Name:'{"text":"Flamethrower"}'}}}}] at @a[nbt={SelectedItem:{id:"minecraft:bow",tag:{display:{Name:'{"text":"Flamethrower"}'}}}}] run fill ^ ^1 ^6 ^ ^1 ^4 minecraft:fire keep

+Flamethrower sound (Repeating, Conditional Always active, inline the previous command block)

execute at @a run playsound minecraft:entity.blaze.shoot neutral @p ~ ~ ~ 2 1

HISTORY

World War I History

After the assassination of the Austrian Archduke Francisco Fernando in Sarajevo, what would be one of the bloodiest conflicts in the history of mankind was unleashed. Following the ultimatum given by Austria-Hungary to Serbia, the geopolitical machineries of the alliance systems were set in motion, and the Triple Alliance created in 1882 (Austria-Hungary, Germany and Italy) and the Entente-Cordiale created in 1907 (France , United Kingdom and Russia). On July 28, 1914, the Austro-Hungarian Empire declared war on Serbia, later in August Germany declared war on Russia and then on France, quickly joining the United Kingdom after the conquest of Belgium and Luxembourg by Germany. A day later, the Austro-Hungarian Empire declared war on Russia and at the end of that year, the Ottoman Empire went to war with Russia.

In this first period of the year 1914, the great war effort of the European powers will begin to be seen, such as the attempt to conquer France by Germany in the well-known Schlieffen Plan to achieve a quick victory and avoid a war on two fronts. The rapid Russian mobilization and the failure of the military plan forced a German withdrawal, which led to a stabilization of the war from the winter of 1915, which is known as the trench warfare from 1915 to 1916. In this episode, the attempts to break the front carried out by Germany and France led to battles as heartbreaking as Verdun where, on the one hand, a large number of troops were found and, on the other hand, combat methods such as poison gas began to be used , tanks and planes with the pretense of causing great damage to enemy armies. In the geopolitical sphere, the departure of Italy from the Alliance to join the Entente-Cordiale, and the collapse of the RMS Lusitania that would force the US to abandon the protectionist policy and begin to look at the European scene, led to a change of course. from the war.

The course of the conflict will change radically in 1917 with the entry of the United States into the European conflict after the intensification of the submarine war by Germany in order to force the surrender of the United Kingdom. In Russia, the revolutionary process that ended the tsarist monarchy, led to the end of the war and a relaxation of the German war effort, which was able to allocate numerous troops to the western front. The increasing depletion of troops and resources, as well as the Ottoman defeat by the British and the Austro-Hungarian forces at the hands of the Italians at the Battle of Vittorio-Veneto, led Austria-Hungary to sign the Padua armistice that would end to war with Italy. In Germany the serious social and political crisis from which one arose led to the abdication of William II and the beginning of the well-known Weimar Republic. On November 11, 1918, the new government of Germany signed the Armistice of Compiègne that ended hostilities on European territory, but the war did not formally end until the signing of the Treaty of Versailles on June 28, 1919, whose harsh conditions led to the rise of the NSDAP and Hitler’s triumph in Germany.

Credits to:

 Aletherynne