Battle!!

Battle!! is Disc 1, Track 17 on the Xenoblade2 Original Soundtrack and Track 4 on the Xenoblade Chronicles 2 Sound Selection. The melody 39 seconds in is based on a part of You Will Know Our Names, and Battle!! (Piano Arrange) is an arrangement of the track for solo piano. The track plays during standard battles in the following areas of Xenoblade Chronicles 2:
 * Argentum Trade Guild
 * Gormott Province
 * Kingdom of Uraya
 * Empire of Mor Ardain (except for the Old Factory)
 * Leftherian Archipelago (not including the Spirit Crucible Elpys)
 * Indoline Praetorium
 * Temperantia
 * Kingdom of Tantal

It also plays during the following scripted battles:

Xenoblade Chronicles 2

 * The on Azurda's back.
 * The Lethal Lysaat King on the Ancient Ship.
 * The Wormeater Brog in Gormott.
 * and the s in Torigoth.
 * The and Sergeant guarding Nia in the Titan Battleship.
 * The Rampaging Ardun in Uraya (when Rex learns to topple using ).
 * The Violent Driver in Fonsa Myma.
 * The Latollo Puffots in Gormott (owned by the children who stole Roc's Core Crystal).
 * The Chefs in Indol.
 * The s in Tantal's Hall of Mystery.
 * The Roiba Ignas in Boreas's Blade Quest, Hero of the Nopon.
 * The Nenz Rodonya and Zeld Rodonya in Godfrey's Blade Quest, Flames of Justice.
 * The Herridot Laia and King Laia in Herald's Blade Quest, The Calm and the Storm.
 * The fight against the Skom Tirkin and the two Matchul Tirkin in Kasandra's Blade Quest, Our Daily Bread.
 * The Ardainian Snides and the Ship-Eating Taos in Newt's Blade Quest, Newt Recruits.
 * The Tronk Aligo in Perun's Blade Quest, Eternal Spirit.
 * The Magno Blants and the Cherys Medooz in Theory and Praxis's second Blade Quest, Blade-Sharp Memory.
 * The first two fights against the Enraged Gogol and the Indignant Gogol in Wulfric's Blade Quest, Tender-Hearted Beast.
 * The fights against the Indoline Warrior Monks in T-elos's Blade Quest, Lingering Resentment.
 * The Aurora Garlus and Aura Garluses in Corvin's Blade Quest, Corvin's Approach.

Finally, it plays during the eating contest between Tora and Boreas during the latter's Blade Quest.

Xenoblade Chronicles 3

 * During the second phase against the at Erythia Sea in Ino's Ascension Quest.

In Super Smash Bros.
Battle!! is one of the music tracks in, available on the and the  stages. The melody at 1:17 was adapted for Pyra and Mythra's victory theme in Super Smash Bros. Ultimate.

Trivia

 * Battle!! is the second in the trend of Xenoblade standard battle themes being called 'Battle' with increasing numbers of exclamation marks; it is preceded by Time to Fight! (literally translated as 'Battle!') from Xenoblade Chronicles and followed by New Battle!!! from Future Redeemed.