420th Chemical Battalion


Federal Mission: On Order 420th Chemical BN deploys to provide CBRN recon, decontamination and detection, theater CBRN specific operations support, and transportation resources and capabilities, in order to protect United States forces and our allies.

State Mission: On Order 420th Chemical BN deploys in support of civil authorities by providing CBRN capabilities, mass casualty decontamination, flood response, transportation support, and other contingency operations in order to save lives, mitigate human suffering, and protect the property of  the citizens of Washington State and the United States of America.

420th Chemical Battalion Chain Of Command

Commander - LTC Rene Mendoza

Command Sergeant Major - CSM Maria Lepe

Units of the 420th Chemical Battalion

  • Headquarters, 420th Chemical Company
  • 792nd Chemical Company
  • 1041st Transportation Company
  • 540th Chemical Detachment
  • 176th Engineer Company
  • 506th Military Police Company