Earth Defense Force
Type of faction or organization

Military organization


Unknown, presumably before the events of Serious Sam 3: BFE


To fight Mental's Horde and save humanity




Egypt (formerly)

Known members

See members


See weapons and equipment


See vehicles


Serious Sam 3: BFE

The Earth Defense Force, abbreivated as EDF, is a military organization featured in Serious Sam 3: BFE.


The Earth Defense Force appears to be the main military force that fights Mental's advance towards Earth. Based on NETRISCA descriptions of humans who fought Mental's forces, the EDF has several military spaceships and enough equipment that protected holdings on other planets. The EDF also seems to have the ability to manufacture their own ammo, as the Ammo Crates mention an organization called the “EDF Corporation”.

Role in Serious Sam 3: BFEEdit

When Mental invaded Earth, the EDF rallied to defend their planet. Despite Mental's superior technology and magic, his army took many casualties, as the NETRISCA description for the Hatchling Arachnoid implies that Mental had to deploy younger and younger troops to meet demands, with increasingly inferior equipment to replenish his losses. However, Mental's numbers ultimately proved to be too much for the EDF to handle, and by the time Serious Sam 3 began, most of the EDF had suffered heavy losses.

In Serious Sam 3: BFE, the Earth Defense Force is depicted as a small force, that only has one headquarters remaining. The fact that Cairo was completely abandoned suggested that the EDF was no longer capable of fighting Mental directly, and instead had to use more covert operations against him, and thus deployed small groups into Cairo to retrieve data for a new plan.

Instead of fighting Mental directly, the Earth Defense Force created a plan to kill Mental in the past by using an ancient Sirian artifact called the Time-Lock, thus changing the future. This would let the EDF insert a group of soldiers know as Charlie Team into the past, and they would travel to Sirius and assassinate Mental while he was dealing with other matters.

However, the Earth Defense Force's headquarters, along with everybody in it, is wiped out near the end of the game, including the Charlie Team via a sneak attack on their headquarters by Mental. The destruction of their last headquarters and the Charlie Team signaled the end of the EDF and destroyed humanity's last hope, which allowed Mental to safely finish off Earth by tossing its moon at it, which ultimately resulted in Earth's destruction.

Despite Mental's best efforts to destroy the humanity, EDF, and planet Earth, Sam Stone is able to successfully escape from the Earth's inevitable destruction via the Time-Lock, which makes him the last man on Earth and humanity's last hope.

Weapons and equipment Edit

The EDF utilizes many weapons, some of which are technologically advanced, such as the XL2 Lasergun and the XPML21 Rocket Launcher.

Weaponry Edit

The EDF has many weapons available, all of which Sam finds throughout the campaign. He is the only member of the EDF to be seen using the weapons, though a dead soldier was found alongside a pistol in the level Summer in Cairo.

Small arms weapons Edit

Fixed weapons/artillery Edit

Equipment Edit

Explosives Edit

Vehicles Edit

The EDF use several standard ground and air transport, as well as spacecraft.

Techology Edit

The EDF have quite advanced technology, though not much of it is seen in Serious Sam 3: BFE. They are usually seen and heard communicating with Sam and one another via headsets.

Known members Edit


List of appearances Edit