The 2020 Bohoma Military-Base Attack

What is established?

A large Boko Haram force overran the Bohoma military position on March 23, 2020, after roughly seven hours of fighting. The Africa Center for Strategic Studies recorded a revised official toll of 98 Chadian soldiers killed and dozens wounded. Contemporary reporting carried President Idriss Déby’s first announcement of 92 deaths.

The two numbers are not treated as competing final truths. They reflect the chronology of reporting: an initial presidential count followed by an official revision. The event was the Chadian military’s heaviest loss in a single Boko Haram attack at that time.

A base in the Lake Chad islands

Bohoma—also rendered Bohouma, Bouma or Boma—was a military position in Chad’s Lac Province. Islands, marshes and channels in the basin cross national borders and have long complicated surveillance, reinforcement and civilian protection.

By early 2020, militant activity in the Chadian portion of the basin had increased. The Africa Center documented a rise in confrontations during 2019 and described Bohoma as part of that wider expansion, while cautioning that Boko Haram and the Islamic State West Africa Province were distinct organizations with shifting areas of influence.

The seven-hour assault

The Africa Center reported that hundreds of fighters approached on several motorboats and attacked from four sides shortly before dawn. The base was overrun around noon. Reinforcements sent toward Bohoma were also ambushed, limiting the army’s ability to relieve the position.

The attackers looted military materiel and destroyed equipment they did not carry away. The Guardian, reporting the first presidential toll, said 24 vehicles were destroyed and weapons were removed by speedboat. These details describe the scale of the loss without attempting to reconstruct violence that the public record cannot fully verify.

The soldiers and the casualty record

The people killed were Chadian soldiers, non-commissioned officers and officers stationed at or responding to the base. Public reporting did not provide a reliable complete list of names, so this file does not invent or infer individual identities.

Déby announced 92 deaths after visiting the area. Subsequent official reporting raised the figure to 98 and recorded dozens wounded. This archive uses the revised figure in its summary while retaining the initial count as part of the verified timeline.

Attribution without an individual judgment

Contemporaneous accounts described the assailants as Boko Haram fighters. The Africa Center reported that a video in which Abubakar Shekau claimed the attack circulated the following day, while also noting uncertainty over which Lake Chad contingent planned and led the operation.

That distinction is central to the case status. A claim or intelligence assessment may support group-level attribution, but it does not prove that a named person participated, commanded the raid or committed a particular killing. Reviewed sources did not identify a public criminal judgment resolving those questions.

National mourning and Operation colère de Boma

After visiting Bohoma, Déby declared three days of national mourning. On March 31, Chad launched Operation colère de Boma, also translated as Bohoma’s Wrath, across parts of Lac Province and adjoining border areas.

The government later announced extensive militant losses and the destruction of insurgent positions. Those were official military claims about the counteroffensive, not judicial findings about the March 23 attackers. The operation therefore belongs to the aftermath but is not treated as a criminal resolution of this case.

Current status

The attack is historically well documented, and Boko Haram’s group responsibility is supported by multiple credible accounts. Individual criminal responsibility remains unresolved in the reviewed public record. No arrest, indictment, trial or final conviction tied specifically to the Bohoma raid was located through September 2026.

The later Barkaram island-base attack of October 2024 is a separate event with a different location, date, toll and response. It is documented in its own case file and is not a continuation or duplicate of Bohoma.

Verified timeline

1. Before dawn, March 23, 2020
   Hundreds of armed fighters begin a multi-directional assault on the Bohoma position.
2. Around noon, March 23
   After about seven hours, the base is overrun; reinforcements have also been targeted.
3. March 24, 2020
   Déby visits the area and announces an initial toll of 92 soldiers killed.
4. Late March 2020
   The official death toll is revised to 98, with dozens wounded, and Chad observes national mourning.
5. March 31, 2020
   Operation colère de Boma begins as a regional military counteroffensive.
6. April 9, 2020
   Chad declares the operation concluded and releases military casualty claims.
7. September 2026
   No individual prosecution or final conviction for the Bohoma attack is located in the reviewed record.

Questions that remain

• Which operational faction planned and led the assault?
• Can a complete, publicly verifiable list of the soldiers killed be established?
• Were any surviving participants identified through evidence capable of supporting a criminal case?
• Why were approaching fighters and the ambush of reinforcements not detected in time?

Sources and verification notes

The attack sequence, revised toll and aftermath were checked against a regional security study and contemporaneous international reporting. Initial and revised casualty figures are presented in chronological order, and military claims are kept separate from judicial findings.

• Africa Center for Strategic Studies — Chad’s Escalating Fight against Boko HaramApril 20, 2020 · attack sequence, revised toll of 98, attribution limits and Operation colère de Boma.
• The Guardian / AFP — Boko Haram kills 92 Chadian soldiers in seven-hour attackMarch 24, 2020 · initial presidential toll, duration, reinforcements and lost equipment.
• Africanews — Deadliest attack ever: Boko Haram kills 92 Chadian soldiersMarch 25, 2020 · independent contemporaneous account of the president’s announcement and site visit.
• International Crisis Group — Derrière l’attaque jihadiste au TchadApril 6, 2020 · regional context and questions about the responsible faction.