Dallgun was born in 2467 on Rembar, a young colony world in the Shival's Gamble system of the Southern Frontier sector. In 2483, when Dallgun was at the age of sixteen, the Val'Turri attacked the system and all of Dallgun's immediate family were killed in the battle. Dallgun escaped on one of the last transports out of Shival's Gamble, floating around refugee camps for six months before a distant uncle on Tolin's Respite in the Peace River system, Keltova Tariss, was granted custody over him. Although traumatized by the loss of his family, friends and home, he vowed revenge, enlisting in LANDFORCE immediately after reaching legal age in 2485. After completing training, he was detailed to the 506th Infantry Division of the LANDFORCE Third Army, and departed later that year to defend Nakkan.

As was the case with STARFORCE, LANDFORCE was woefully out-gunned and the military presence amounted to little more than a brief delay in the destruction of the colony. Unwilling to waste able-bodied troops, LANDFORCE command ordered all forces stationed on Nakkan to disengage and retreat from the system when it became clear that the colony was lost, and Dallgun was forced to abandon millions to their deaths. This pattern would continue for another year, with Dallgun participating in actions on Kosara and Stonewall.

During combat in Stonewall, Dallgun was severely wounded by a Val'Turri directed energy weapon. The strike completely destroyed his right leg above the knee, although the nature of the weapon meant that the wound was instantly cauterized. Despite this grievous injury, Dallgun propped himself up against a barricade and continued to engage Val'Turri forces. Unfortunately, as before, the defenders were withdrawn when the STARFLEET presence was wiped out.

Dallgun's recovery kept him out of the action on both Providence and New Haven, two more colony worlds lost to the inexorable Val'Turri advance, although he managed to return to the front lines in time to join combat on both Korashi and Miro in the Keldar's Bounty system. As before, LANDFORCE would again be recalled, and Dallgun would escape with the Seventh Fleet. Being forced to abandon so many civilians would deeply trouble Dallgun for decades.

Dallgun's next post would be his own surrogate homeworld, Tolin's Respite, in the Peace River system. Thankfully, the actions of Fleet Admiral Gu'Tanoth and his Third Fleet would miraculously spare the system. With the tide turning, Dallgun and the rest of LANDFORCE would take a backseat for the rest of the war.

After the cessation of hostilities in 2499, Dallgun felt a need to atone for his sins of leaving so many to die. Wanting a change of scenery, and to distance himself from the ruined South, Dallgun transferred from LANDFORCE to the Sedrim Local Defense Force at the age of 32 rather than retire to civilian life. He has remained with Sedrim LDF ever since, declining numerous promotions in order to 'remain on the front lines'.