After an assault or battery, the first priority is safety.
Get to a secure place, call 911, and seek immediate medical treatment.
If a police officer responds, give a clear factual statement and make sure the event is documented.
Medical records and law-enforcement documentation can become important evidence in both the criminal and civil sides of the matter.

Helpful steps include:
- Get emergency medical care
- Report the incident to police
- Photograph visible injuries
- Preserve damaged clothing or personal items
- Save names and contact information for witnesses
- Avoid discussing the case on social media
- Contact a lawyer as early as possible
- Ask how to obtain the police report number
- Save text messages, voicemails, emails, or social media messages related to the incident
- Write down what happened while details are fresh
- Preserve receipts or records showing where the incident occurred
- Avoid direct contact with the attacker
These early steps can make a major difference later.
They help establish when the injury happened, what the victim reported, and how the evidence looked before it changed or disappeared.
Gathering Evidence for Your Assault and Battery Claim
Evidence can determine whether a claim succeeds.
In many battery cases, the most important proof includes surveillance footage, medical records, police reports, photographs, and statements from people who saw what happened.
A lawyer may also focus on interviewing witnesses, identifying prior incidents at the location, and preserving digital evidence before it is lost.

Useful evidence may include:
- Medical records and treatment bills
- Police reports
- Surveillance video
- Photos of injuries and the scene
- Witness statements
- Employment records showing lost income
- Communications before or after the incident
- 911 records
- Bodycam or dashcam footage, if available
- Protective order paperwork
- Prior incident records at the location
- Security staffing records
- Photos of damaged property
- Screenshots of threats or communications
A strong civil case often depends on what can be gathered early.
The evidence should connect the conduct to the injury, the injury to documented losses, and any third-party negligence to a foreseeable risk that should have been addressed.
How to Prove Liability in an Assault and Battery Case
To win a civil claim, the victim must show that the defendant’s conduct caused the injury and resulting losses.
In direct assault and battery claims, that usually means proving intentional conduct, harmful or offensive contact, or an immediate threat of harm.
In a direct claim against the attacker, liability often focuses on intent, contact, threats, self-defense arguments, and causation.
In a negligent security claim, liability usually focuses on whether the property owner or business had notice of a foreseeable risk and failed to use reasonable security measures.

The evidence should answer questions such as:
- Who committed the act?
- What exactly happened?
- What injuries resulted?
- Were there witnesses or video?
- Did the location have prior safety problems?
- Did another party fail to act reasonably?
Because these cases may involve both intentional tort and negligence theories, the evidence should be organized around the specific claim being pursued.
A lawyer can help organize the facts, present evidence effectively, and prepare the case for negotiation, filing, or trial if needed.
Missouri Laws That Can Affect Your Claim
Missouri law can affect both the criminal and civil sides of an assault and battery matter.
Missouri criminal assault charges and civil assault or battery claims serve different purposes.
A criminal conviction may help support a civil case, but it is not always required. Likewise, a dismissed or reduced criminal charge does not automatically prevent a civil claim.
On the criminal side, Missouri classifies assault offenses by degree, with first-degree assault covering attempts to kill or knowingly causing or attempting to cause serious physical injury.
Missouri also recognizes lower-degree assault offenses and armed criminal action involving a dangerous instrument or deadly weapon, which can increase the seriousness of the case.

On the civil side, timing matters. Missouri’s statute of limitations for civil actions for assault and battery is generally two years, which is shorter than the deadline for many other personal injury claims.
That means victims should not wait too long to speak with counsel about their options.
Claims involving negligent security, wrongful death, minors, or government property may involve different deadlines or additional legal issues, so the specific facts should be reviewed promptly.