It seems as though every RPG ↑ includes a section on combat.
At 6 pages, the combat chapter is quite short. And we get a fair warning:
Combat in Traveller is designed to be deadly, especially if there is a gap in technology between combatants.
Everyone rolls adding the higher of their Dex ↑ or Int ↑ modifier.
A quick sub-section gives guidance to the referee: You may want to only roll once for all of your forces.
In the case of an Ambush, everyone still rolls initiative. However, the side (or individuals?) that’s aware gets DM ↑ +6 to their roll. Those unaware gets DM ↑ -6. A 12 point swing guarantees that if you get the drop on an average foe, you’re going first.
An unsurprised Traveller (or opponent) may make a Tactics check at the start of combat. The Effect applies to each member on the side.
The rules provide a brief discussion regarding maps.
The Combat Round
Each round is 6 seconds. Each round, on their turn, a Traveller may make a Minor Action and a Significant Action.
Most often, in combat, this would be an attack. I’d imagine if you were trying to do something athletic that would count as a significant action.
A Traveller can skip their significant action to perform two additional Minor Actions.
It could also be a skill check, issuing a command, or calling in an air/orbital strike.
With an explicit rule about multiple tasks, I would certainly allow multiple tasks as a significant action.
Aiming, moving, reloading, drawing a weapon, standing, crouching, lying down, or some real minor task.
A quick shout. Or pushing a button.
For tasks that span multiple rounds, while you are performing tasks, when you sustain damage you must immediately check that skill. Any damage you sustain counts as a DM ↑ penalty.
Failure means your effort for the round doesn’t count towards the total effort. Failing with an Effect of -6 or less ruins the task.
As a Signficant Action, your Traveller can make a Leadership check. On a positive Effect, the leader grants a number of Boons to other Traveller checks. On a negative Effect, the opposing side may inflict a number of Banes equal to the Effect.
A Traveller under attack may react by dodging, parrying, or diving for cover.
Each reaction imposes a DM ↑ -1 on their next set of actions.
Dodging imposes a penalty on an incoming attack. The penalty is the better of the Traveller’s Dexterity or Athletics (dexterity). Every attack must be dodged. You can dodge both melee and ranged attacks.
Diving for Cover only works against ranged attacks. And depending on whether there’s objects or simply dropping prone the penalty to all ranged attacks is DM-2 and DM-1 respectively. When diving for cover you forgo your next action.
Parrying works against melee attacks. You apply a penalty to an incoming melee attack equal to your Melee skill.
Characters within 2 meters are locked in combat. They may only attack those in their close combat group. You can fire single-handled ranged weapons, which can be parried. Rifles can be used as clubs. And moving away provokes a free attack with DM+2 to the attack roll.
This section gives a quick rundown of weapon attributes.
Add the Effect of an attack to the roll.
Apply damage to END. Any excess reduces STR or DEX. If either STR or DEX drops to 0, your Traveller’s unconcious. If all three physical traits drop to 0, you Traveller’s dead.
STR adds damage to melee weapons. Armor reduces damage, though some weapons have armor piercing.
Cover imposes penalties to attacks and can provide bonus armour.
Some weapons are destructive. When you roll damage, you multiply it by 10.
Make opposed Melee (Unarmed) checks, and the winner may choose from a menu of options. Drop them to the ground, disarm (and maybe take a weapon), throw an opponent, inflict melee damage, inflict weapon damage, drag the opponent, breakaway, or continue the grapple.
Here we have a callback to Multiple Tasks. You can attack with two different weapons, each at DM ↑ -2.
So, I’d definitely say that you can’t use a weapon to attack more than once per combat round.
Lots of different traits for weapons.
And that wraps up Combat. Its quite clear that combat is a dangerous affair. Travellers have numerous options; I’m particularly fond of Tactics and Leadership having a mechanical bonus.
Up next Encounters and Danger.