- "The older guys like Miller, Sgt. Sullivan and myself, we're known as "The old breed". "Old"... we're not even out of our twenties."
- — Roebuck in Little Resistance
Sergeant Roebuck was an American squad leader of the United States Marine Corps in Call of Duty: World at War. He is voiced by Kiefer Sutherland. He is mentioned by Robert McNamara in Call of Duty: Black Ops 4 within the Zombies map Classified.
Call of Duty: World at War
Roebuck is part of the invasion force that assaults Makin Island. He and the rest of his unit come to rescue Miller and his reconnaissance team on Makin, stabbing the would-be killer in the back. Along with Sullivan and the other Marine Raiders, they raid the island, rescue their support squad and escape Makin Atoll.
Two years later, Roebuck, Miller, Sullivan and a new recruit named Pvt. Polonsky participate in the invasion of Peleliu as part of the 1st Marine Division. They make way for Allied forces after clearing Japanese defenses but Sgt. Sullivan gets stabbed by a Banzai Charger at the end of the level. Roebuck is promoted to Sergeant during the landing on Peleliu and takes command of the squad.
He takes part in capturing Peleliu airfield and crushing the remaining Japanese forces there. After Peleliu, he leads Miller, Polonsky and several others in the invasion of Okinawa. After clearing Wana ridge, they receive orders to storm Shuri Castle.
After fighting through numerous Japanese soldiers they storm Shuri Castle and come across Japanese forces attempting to surrender. He and Polonsky move in to secure the soldiers that pretend to surrender, only to get attacked by them. He could live or die according to the player's actions.
Towards the end of "Breaking Point", a group of three Japanese soldiers pretend to surrender. Roebuck and Polonsky both walk up to them and turn towards Miller, giving the Japanese a chance to strike. Roebuck, who is in between two soldiers, calls for help, as does Polonsky.
A faster trigger finger and better aim are required to save Roebuck as he has two enemies holding him instead of one. If Miller saves Roebuck, Polonsky is killed and Roebuck will kneel by Polonsky pleading him to get up and will shout, swear and curse at the attacking Japanese while firing at them with his M1 Thompson. After the Japanese are defeated, he gives Miller Polonsky's dog tags and repeats what he said in the last line of the introduction of the mission.
Roebuck dies, and Polonsky survives. Polonsky then proceeds with a similar reaction to Roebuck's if the former died. Polonsky then joins Miller in holding off the last of the Japanese.
Guardian Angel (10 / Bronze Trophy ) - In the final battle for Okinawa, save Sgt. Roebuck. (Solo or co-op)
Call of Duty: Black Ops
When walking through the Pentagon as Alex Mason, a portrait of Roebuck can be seen. His picture and pictures of World War II battles can also be seen in "Five". In Rebirth and "Five" Roebuck's body can be seen in the labs, although it is unclear if it's canon or just his textures.
- Makin Atoll - little more than sand, trees, and a Japanese military base. Miller's reconnaissance team landed there almost a week ago. Since then - we've heard nothing. The waiting's over, we're going in. For all we know, they're already dead. If what little we know about the Japanese is true....it might be better if they are."
- "Alongside familiar familiar faces, fresh-faced recruits, the older guys like Miller, Sergeant Sullivan, and myself, we're known as the "Old Breed". Old? We're not even out of our twenties."
- "We're all numbed by Sullivan's death. We just never saw it coming. I still can't believe it. The most solid, dependable, and courageous Marine we've ever known. Blink of an eye...gone. Now it's down to me and me alone, to lead these men, my brothers, safely through this campaign. AA fire from Peleliu Island is knocking our planes right out of the sky. Taking this airfield is our only priority---whatever the cost."
- "Though we've taken the airfield, the enemy still holds onto most of the inland areas of the island. A maze of trenches and artillery positions run right through this whole Godforsaken rock. The enemy's dug in deep, and we have to get our hands dirty. Flamethrowers: We'll burn 'em out."
- "They'll come at us from all sides. Watch each other's backs."
- "Everything that was asked of us - we've done. Every night we lay in a filthy foxhole - prayin' the enemy won't slit our throats. Every day we spent crawling through the mud and the dirt while bullets whistled all around. This is the enemy's last stand. When we take Shuri Castle, we go home. All of us."
- When Sgt. Sullivan is stabbed in the stomach, Roebuck's label changes from Corporal to Sergeant immediately.
- Roebuck's skin is slightly darker on the Wii.
- Even when Roebuck is a Corporal, he has Sergeant's stripes on his sleeves.
- Roebuck is never seen with a helmet except on "Blowtorch & Corkscrew".
- If Roebuck survives on the Wii version, at the end of the level he goes to Polonsky's body, but Polonsky's body appears as Roebuck's body instead.
- Roebuck is the multiplayer announcer when playing as the Marine Raiders.
- In Call of Duty: World at War: Final Fronts, he has no scars and never dies.
- Roebuck is unlocked as a Gamer Picture when the player prestiges on the Xbox 360.
- In 1944, He, Miller and Sullivan were "...not even out of our twenties" capping age at 29 and having served enough to be promoted twice by the close of 1941/early '42 after being a minimum of 18 to serve, suggesting an absolute minimum of 19-20 in 1941 at Makin and 21-23 in 1944 at Peleliu, most likely mid-late twenties throughout the campaign.