[6] The 1st Foreign Regiment also dispatches and supports world humanitarian missions around the globe during natural catastrophes and disasters.

The 3rd combat company fought with distinction while sacrificing itself during the Battle of Camarón (French: Bataille de Camerone) on April 30, 1863.

It was at the end of September 1870, that the regiment integrated the 15th Crops 1st Brigade, 2nd Division and was found making way towards Orléans (where the regiment refused 3 times consecutively the order to retreat and where foreign Lieutenant Kara, Peter I of Serbia distinguished himself) on October and December 1870 then at Montbéliard in January 1871, where he forced the Germans to leave the city.

They lost 60 killed and wounded which earned this heroic Sergent (who already distinguished capability at Tonkin) the decoration of the Légion d'honneur for his bravery under fire.

The pacification debuted in 1895 and endured till 1905, date of permanent return of units of the 1st Foreign Regiment to Algeria.

In August 1907, Chef de bataillon (Commandant – Major) Provost was killed at Casablanca while repelling a violent attack.

However, the regiment continued to combat administer the institution and supply men for the ensemble of foreign units engaged in the conflict.

The survivors constituted the renowned Marching Regiment of the Foreign Legion (RMLE) which was entrusted to Colonel Paul-Frédéric Rollet.

The RMLE would be the second most decorated unit of the French Army (after the Infantry Colonial Regiment of Morocco, actual RICM).

In the Orient: A provisional regiment was formed of troops of the Army of Africa (France), with the title of 1er Régiment de Marche d'Afrique.

This composite infantry battalion would be engaged with other units of the Corps expéditionnaire d'Orient in the Orient (firstly in the Gallipoli campaign in the Dardanelles, and thereafter on the Salonika front).

Losing 815 men under fire, the Legion Battalion of 1er RMA was cited 3 consecutive times out of which 2 at the orders of the army before being disbanded on 30 September 1917.

Rif War: the conquest of Morocco would require in several times the engagements of units of the 1st Foreign Infantry Regiment 1er REI and especially since 1918.

Their chief, Captain Timm, severely wounded in the leg and in the face, attached himself to a mule[10] to be able to continue his commandment and lead his men.

On June 10, 1924, the 6th battalion was decimated at the cost of 4 officers killed and 60 fatalities during an operation at night to liberate the post of Mediouna.

Nevertheless, Chef de bataillon (Commandant -Major) Le Roch was killed in violent combats on July 14 while leading the 1st Battalion at the tips of Tizi-N'Ouidel.

In 1941, two battalions of the 1er REI and the company "hors rang" (CHR) constituted the 4th Demi-Brigade of the Foreign Legion (4e DBLE) sent to Senegal.

In November 1942, the 1st Battalion of the 1st Foreign Infantry Regiment 1er REI illustrated capability during combats against the Afrika Korps in Tunisia.

Formed of three battalions, the regiment illustrated combat ability at the cost of 380 fatalities by inflicting heavy losses to the enemy at Pont du Fhas and in the Djebel Zaghouan.

The regiment participated along the various combat specialized units which would partake operations in which the Legion would lead until 1962 (notably the Mounted Saharan Companies).

The regiment accordingly was fully dedicated to the selection, training/instruction of foreign volunteers, institution administration and funneling via the communal depot, general reinforcements for units engaged in Indochina.

On September 1, 1950, the Autonomous Group of the Foreign Legion (GALE) was created, commanded consecutively by Générals Jean Olié and Paul Gardy.

On March 5, 1961, the tactical general staff headquarters of the 1st Foreign Regiment 1er RE at the orders of battalion chief (Commandant -Major) Fournier was engaged in the region of Sebdou then Djilali.

The black pavilions brought back from Tuyen-Quang in 1885 by Captain Borelli were burned in application of wishes to have them never leave Sidi-Bel-Abbès.

On April 30 was the inauguration of the Monument aux Morts repatriated from Algeria and the celebration of the centennial of the battle of Cameron with a military parade.

September 1990 to April 1991: The 1st Foreign Regiment engaged a Transport Platoon within the cadres of Opération Daguet in the Gulf.

Since 1991, the regiment has regularly supplied and reinforced units of the Legion deployed abroad as well as interior missions (notably Sentinel since 2015).

The regiment is represented inside the grenade while the globe commemorates the relic of the Foreign Legion in Sidi Bel Abbès.

The current insignia of the 1st Foreign Regiment, (1er R.E), retook the symbolic ruban of the Commemorative medal of the Mexico Expedition created in 1863.

Chant de Marche : Nous sommes tous des volontaires featuring:[12] Nous sommes tous des volontaires, Les gars du 1er étranger, Notre devise est légendaire, Honneur Fidélité – Fidélité, Marchons légionnaires, Dans la boue, dans le sable brûlant, (bis) Marchons l'âme légère, (bis) Et le cœur vaillant, (bis) Marchons légionnaires.