Tactics  and weapons used?

• British planned an attack on a 24 km front between Serre, north of Ancre, and Curlu north of Somme. The initial tactic was to bombard german trenches a week before the attack. Over 1.6 million shells were used
  

• Weapons Used:
•   Bayonets 
  
• Chiefly used as a psychological weapon 
  
• Flamethrowers 
  
• Grenades 
  
• Mills Bombs and Jam Pots: both forms of grenades 
  
• Machine Guns 
  
• Pistols The officer's weapon 
  
• Poison Gas 
  
• Rifles 
  
• Tanks 
  
• Trench Mortars 
  
• Light and Heavy Artillery