yearOfMajorOffensive

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: yearOfMajorOffensive

Indicates the specific year in which a major offensive (a large-scale, significant military attack or campaign) took place.