• TOT missions must be planned at least 1 turn in advance. This information includes Artillery units or OBA increments involved in the mission, the target hex and the turn of impact. Artillery units or OBA increments involved may still perform other fire missions in the intervening turns.
  
• Artillery units or OBA increments removed from a TOT mission on the turn of the mission may not combine fire with other artillery units or OBA increments. Artillery units or OBA increments removed from a TOT mission on a turn prior to the mission do not suffer this penalty.
  
• TOT missions get a +1 column shift for each artillery unit or OBA increment after the first, up to a maximum of +2.
  

(04-19-2025, 12:33 AM)plloyd1010 Wrote: Time on target (TOT), Multiple round simultaneous impact (MRSI) in the modern vernacular, is an artillery coordination technique which has the intention of the first shells of an artillery strike impacting the target at the same time. Analysis of artillery effectiveness showed that most casualties caused by artillery occurred within the first few seconds of the initial round’s impact. To achieve the maximum effectiveness of artillery fire, the British Army developed this firing technique in late 1941. The U.S. Army enthusiastically adopted TOT methodology and had it in place prior to the North Africa landings, though may not have been using the technique in the Pacific until later in the war.
 
The technique is fairly simple. The target and specified impact time is sent to each battery. The battery staff then calculates when the guns would need to fire in order for the first shot to reach the target at the correct time. The standard being that the first round of each gun would hit the target with 3 seconds of the designated time. Time synchronization be achieved via a common time-base, initially this was the time signal provided by the BBC.
 
TOT missions should be considered similar to the drumfire mission from East Front Artillery. It may be performed by off-board artillery or on-board artillery and heavy mortars which have not moved. Any onboard weapons using TOT must be able to fire together, either being stacked together or with the aid of a leader’s fire modifier.

• TOT missions must be planned at least 1 turn in advance. This information includes Artillery units or OBA increments involved in the mission, the target hex and the turn of impact. Artillery units or OBA increments involved may still perform other fire missions in the intervening turns.
  
• Artillery units or OBA increments removed from a TOT mission on the turn of the mission may not combine fire with other artillery units or OBA increments. Artillery units or OBA increments removed from a TOT mission on a turn prior to the mission do not suffer this penalty.
  
• TOT missions get a +1 column shift for each artillery unit or OBA increment after the first, up to a maximum of +2.
  

(04-19-2025, 08:29 AM)treadasaurusrex Wrote: May I add this rule to the draft house rule set that we've been testing for some time, Peter?