10,000-character long article:

In the later period of the Iraq War, facing the business email list complex environment of urban street fighting, the U.S. military adjusted its combat strategy in order to avoid unnecessary casualties and improve combat efficiency. Mid-Taiwan style of air-to-ground coordination between strength and ground special operations forces.

The ground special operations forces are divided into many groups to infiltrate the city of Baghdad. Their task is not to fight against the Iraqi defenders, but to collect real-time intelligence on the changes in the city of Baghdad: such as changes in troop build-up, changes in firepower configuration, and main command locations Changes, etc., 3) Steps

• When analyzing the interaction mode of each role in a process;

• First analyze which roles are involved in this process;

• Analyze the responsibilities of each role in this process and the professional characteristics of each role;

• Decompose the process into interactions between roles, and figure out what the "interface" between roles is;

• Use sequence diagrams to organize "interaction" actions in chronological order;

• Appropriate control of granularity, continuous optimization and reorganization. Processes with branches that are too complex are not applicable.

4) Remarks

Generally, product managers do not need to draw complex grammar content, but only need to draw key key interactions, as follows:

7. Use Case Diagram

Use case diagrams are mainly used to answer two questions - what are the user roles of this system? What can each role do?

1) Basic syntax

Roles, use cases, system scope, relationships.

2) Complex grammar

Role inheritance, use case inheritance, use case include, use case extend.

3) Steps

• clear system scope;

• What roles are there, and the relationship between roles and roles;

• What use cases are there, the relationship between roles and use cases, sub-use cases and extensions of use cases.

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