Gallic War, 58 B.C.

The battle of the Arar (June 58 BC) was the first significant victory
won by Julius Caesar, and marked the unusually late start of his
military career
http://www.historyofwar.org/articles/battles_arar.html

The battle of Vesontio (September 58 B.C.) was the second major
victory of Julius Caesar's military career and saw him defeat a large
army of Germans led by Ariovistus, a Suebian chief who had crossed the
Rhine some years earlier to intervene in a war between Rome's ally's
the Aedui and the Sequani.
http://www.historyofwar.org/articles/battles_vesontio.html

The battle of Bibracte (June/July 58 B.C.) was the second and decisive
battle in Julius Caesar's first military campaign, and saw him force
the Helvetii tribe to abandon their planned migration from Switzerland
to the west coast of France
http://www.historyofwar.org/articles/battles_bibracte.html

Gallic War: The conquest of the Belgae, 57 B.C.

The battle of the Aisne (57 B.C.) was Julius Caesar's first victory in
his campaign against the Belgic tribes of modern Belgium.
http://www.historyofwar.org/articles/battles_aisne_57_bc.html

The battle of the Sambre (July 57 B.C.) was the most important battle
of Caesar's campaign against the Belgae in 57 B.C. and saw his army
recover after being ambushed to inflict a crushing defeat on three
Belgic tribes led by the Nervii.
http://www.historyofwar.org/articles/battles_sambre_57_bc.html

The siege of the Atuatuci (September 57 B.C.) was the final major
victory during Julius Caesar's conquest of the Belgae.
http://www.historyofwar.org/articles/siege_atuatuci.html

The battle of Octodurus (winter 57/56 B.C.) was a battle in the upper
Rhone valley described by Julius Caesar as a Roman victory, but that
effectively ended an attempt to open the Great St. Bernard Pass.
http://www.historyofwar.org/articles/battles_octodurus.html

Gallic War: The First Revolt, 56 B.C.

The battle of the Morbihan Gulf (June 56 B.C.) was the first naval
battle in recorded history to definitely took place in the North
Atlantic, and saw a Roman fleet raised by Julius Caesar destroy the
naval power of the Veneti tribe of modern Brittany.
http://www.historyofwar.org/articles/battles_morbihan_gulf.html

The defeat of the Sotiates (56 B.C.) was the first of two major
battles in unknown locations in which Publius Crassus, the son of the
Triumvir and one of Caesar's most able lieutenants, defeated the
Aquitani tribes of south-west Gaul.
http://www.historyofwar.org/articles/defeat_sotiates.html

The defeat of the Vocates and Tarusates (56 B.C.) was the second of
two major battles in unknown locations in which Publius Crassus, the
son of the Triumvir and one of Caesar's most able lieutenants,
defeated the Aquitani tribes of south-west Gaul.
http://www.historyofwar.org/articles/defeat_vocates_tarusates.html

Gallic War: Second Gallic Revolt, 54-53 B.C.

The disaster at Atuatuca (October 54 B.C.) was one of the most serious
setbacks suffered by Julius Caesar during his conquest of Gaul, and
saw the Eburones destroy an entire Roman legion that had just entered
winter quarters.
http://www.historyofwar.org/articles/battles_atuatuca.html

The siege of Q. Cicero's camp, early in the winter of 54-53 B.C. was
the highpoint of the second Gallic revolt during Julius Caesar's
conquest of Gaul, and its failure handed the initiative back to the
Romans.
http://www.historyofwar.org/articles/siege_ciceros_camp.html

Gallic Wars: Dumnorix, Divitiacus and Ariovistus

Dumnorix (d.54 B.C.) was a leader of the anti-Roman faction in the
Aedui tribe, and the brother of the pro-Roman leader Divitiacus.
http://www.historyofwar.org/articles/people_dumnorix.html

Divitiacus (fl.58-57 B.C.) was a leader of the pro-Roman faction in
the Aedui, and the brother of the anti-Roman leader Dumnorix.
http://www.historyofwar.org/articles/people_divitiacus.html