Maryland Code, Family Law § 9-108

(1) “deployment” means compliance with military orders received by a member of the United States Army, Navy, Air Force, Marine Corps, Space Force, Coast Guard, National Guard, or any other Reserve component to report for combat operations or other active service for which the member is required to report unaccompanied by any family member or that is classified by the member's branch as remote; and

(2) “deployment” does not include National Guard or Reserve annual training, inactive duty days, or drill weekends.

(c)(1) A parent who petitions the court for an order or modification of an existing child custody or visitation order after returning from a deployment shall specifically reference the date of the end of the deployment in the petition.

(1) the other parent reasonably accommodate the leave schedule of the parent who is subject to the deployment;

(2) the other parent facilitate opportunities for telephone and electronic mail contact between the parent who is subject to the deployment and the child during the period of deployment; and

(3) the parent who is subject to the deployment provide timely information regarding the parent's leave schedule to the other parent.