The Spanish Army has been working through the night to keep the deadly Almeria wildfire from reigniting.

Footage shared by the Military Emergency Unit (UME) shows soldiers battling flare-ups, clearing roads and using heavy machinery to reinforce the fire perimeter across the worst-hit areas.

They are also seen loading evacuated residents onto their coaches after local authorities ruled that hundreds could return to their homes.

Troops remained on the ground overnight, warning that the risk from secondary fires and hidden hotspots remains high.

‘Every secondary fire requires attention,’ the UME said as it shared footage of soldiers extinguishing flames advancing towards El Marchal cemetery.

The UME said troops spent the night extinguishing reactivations, securing the fire perimeter and deploying drones to locate hotspots around El Chive, Lubrin, El Marchal, Bedar and Los Gallardos.

Soldiers were also inspecting isolated homes and rural tracks alongside other emergency services to ensure no new flare-ups threatened nearby communities.

The overnight operation comes after authorities began allowing many residents to return to their homes following mass evacuations earlier in the week.

Despite that progress, officials have stressed that the wildfire remains active in places and that emergency services will continue monitoring the burn area around the clock.

The blaze has killed 12 people, making it one of the deadliest wildfires in modern Spanish history, while thousands of hectares have been destroyed across eastern Almeria.

Although conditions have improved, firefighters and military personnel remain on high alert as they work to prevent changing winds or hidden embers from reigniting the fire.