The biggest war tool is going over strategy with clan mates before attacking. Running it by others to make sure that all points are covered helps heaps.
At times, clan chat may not be enough to convey complex strategy when suggesting it to others. There are tools that can be used to help immensely with complete understanding.
This video shows voice chat, picture sharing and picture editing methods that help keep things with no chance of misinterpretation.
If any tool is needed, our clan is dedicated to help with strategy. Just ask.